The correct answer is E.The term, international relations,  refers to an academic discipline that focuses on the study of the interaction of the actors within the international system. These actors are agencies that, through their actions, can create meaningful outcomes within the international milieu and include states, as well as, and non-state actors. Although considered as a branch of political science concerned with relations between nations and primarily with foreign policies, it is essentially an interdisciplinary field of a serious academic study of which requires knowledge of international history, law, and economics as well as foreign policy and international politics. It is a comparatively new comer amongst academic disciplines. Its first dedicated university professorship was founded in 1920 at University College of Wales at Aberystwyth. While International Relations (IR) in capital letter is used refer to the discipline, the lower case international relations is frequently used to mean the relations between states, but also between states and non-state organizations, especially in the context of political, economic, or cultural relationships.